tim/prune/gui/WaypointListModel.java

   1 package tim.prune.gui;
   2
   3 import java.util.ArrayList;
   4 import javax.swing.AbstractListModel;
   5
   6 import tim.prune.data.DataPoint;
   7 import tim.prune.data.Track;
   8
   9 /**
  10  * Class to act as list model for the waypoint list
  11  */
  12 public class WaypointListModel extends AbstractListModel
  13 {
  14         Track _track = null;
  15         ArrayList<DataPoint> _waypoints = null;
  16
  17         /**
  18          * Constructor giving Track object
  19          * @param inTrack Track object
  20          */
  21         public WaypointListModel(Track inTrack)
  22         {
  23                 _track = inTrack;
  24                 _waypoints = new ArrayList<DataPoint>();
  25                 _track.getWaypoints(_waypoints);
  26         }
  27
  28         /**
  29          * @see javax.swing.ListModel#getSize()
  30          */
  31         public int getSize()
  32         {
  33                 return _waypoints.size();
  34         }
  35
  36         /**
  37          * @see javax.swing.ListModel#getElementAt(int)
  38          */
  39         public Object getElementAt(int inIndex)
  40         {
  41                 DataPoint p = null;
  42                 if (inIndex < 0 || inIndex >= getSize()
  43                         || _waypoints == null || (p = _waypoints.get(inIndex)) == null)
  44                         return "";
  45                 return p.getWaypointName();
  46         }
  47
  48         /**
  49          * Get the waypoint at the given index
  50          * @param inIndex index number, starting at 0
  51          * @return DataPoint object
  52          */
  53         public DataPoint getWaypoint(int inIndex)
  54         {
  55                 return _waypoints.get(inIndex);
  56         }
  57
  58         /**
  59          * Fire event to notify that contents have changed
  60          */
  61         public void fireChanged()
  62         {
  63                 _track.getWaypoints(_waypoints);
  64                 this.fireContentsChanged(this, 0, getSize()-1);
  65         }
  66 }